Home / 720,679.05-1,081,004.91-215,241.48

Finding the Fourth Proportional to 720,679.05, 1,081,004.91 and 215,241.48

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Solution

The fourth proportional to 720,679.05, 1,081,004.91 and 215,241.48 is: 322,858.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,679.05 : 1,081,004.91 = 215,241.48 : x
  2. Step 2: Convert to fraction form
    720,679.05/1,081,004.91 = 215,241.48/x
  3. Step 3: Cross multiply
    720,679.05x = 1,081,004.91 × 215,241.48
  4. Step 4: Simplify right side
    720,679.05x = 232,677,096,715.67
  5. Step 5: Solve for x
    x = 232,677,096,715.67/720,679.05
  6. Step 6: Final answer
    x = 322,858.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.